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National Semiconductor
Evaluation Board User's Manual
ADC121S101 / ADC101S101 / ADC081S101
ADC121S051 / ADC101S051 / ADC081S051
ADC121S021 / ADC101S021 / ADC081S021:
50 ksps to 1 Msps, 12-, 10- and 8-Bit
GND TP5
TP4
© 2003, 2004, 2005 National Semiconductor Corporation.
Analog-to-Digital Converters
VDD Set
TP1
J6
GND
VR1
TP7
VDD_IN
J3
U1
TP8
VIN
GND
Y1
National Semiconductor
ADC121S101 Evaluation Board
Rev. 1
U2
TP2
GND
J7
J5
ADC121S101
ADC101S101
ADC081S101
TP3
GND
J2
CLK
1
August 2005
Rev A
http://www.national.com
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Table of Contents
Related Manuals for National Semiconductor ADC121S101
Summary of Contents for National Semiconductor ADC121S101
- Page 1 ADC121S051 / ADC101S051 / ADC081S051 ADC121S021 / ADC101S021 / ADC081S021: 50 ksps to 1 Msps, 12-, 10- and 8-Bit Analog-to-Digital Converters VDD Set GND TP5 VDD_IN ADC121S101 ADC101S101 ADC081S101 National Semiconductor ADC121S101 Evaluation Board Rev. 1 © 2003, 2004, 2005 National Semiconductor Corporation. http://www.national.com...
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Page 3: Table Of Contents
4.6 Power Supply Connections ....................5 4.7 Power Requirements ......................6 4.8 Analog Inputs ......................... 6 5.0 Installing and Using the ADC121S101 Evaluation Board..............6 5.1 Software Installation....................... 6 5.2 Setting up the ADC121S101 Evaluation Board..............6 5.2.1 Board Set-up......................6 5.2.2 Quick Check of Analog Functions ................ -
Page 4: Introduction
Connect a clean power supply to the terminals of Reference to the ADC121S101 in this document is meant connector J6. Adjust power supply to a voltage of to refer to all of the above devices, unless otherwise ±5.5V to ±5.7V before connecting it to the board. -
Page 5: Functional Description
Section 5.0. The input signal may be either a.c. or d.c. coupled to the 4.5 Digital Data Output. ADC121S101 with the setting of the jumper on J4. See The digital output data from the ADC121S101 is available schematic Figure 2. -
Page 6: Power Requirements
Refer to Figure 1 for locations of major components on of a.c. or d.c. signal coupling to the ADC121S101. Short the board. If at any time the expected response is not together pins 2 and 3 of J4 to a.c. couple the input signal. -
Page 7: Getting Consistent Readings
WaveVision Capture Board. that the ADC under test may perform better than our measurements would indicate. Windowing is a common If there is no output from the ADC121S101, perform the method of improving FFT results of finite data. following: We can eliminate the need for windowing and get more •... -
Page 8: Hardware Schematic
7.0 Hardware Schematic © p B © % 6 £ % 2 1 3 ¥ 4 1 S T S S ¤ ¡ © C ¥ S @ & F F ( 0 ' ¤ R 1 R ¥... -
Page 9: Adc121S101 Evaluation Board Bill Of Materials
8.0 ADC121S101 Evaluation Board Bill of Materials Item QTY Reference Part Source Not Populated C2, C4, C6, C8, C9 0.1 uF Type 0805 68 uF, 6.3V or 10V Type 7343 10 uF, 6.3V or 10V Type 3216 1 uF, 6.3V or 10V... -
Page 10: A1 Summary Tables Of Test Points And Connectors
APPENDIX A1 Summary Tables of Test Points and Connectors Test Points on the ADC121S101 Evaluation Board TP 1 Ground TP 2 Ground TP 3 Ground TP 4 Ground TP 5 Ground TP 6 ADC supply voltage TP 7 Board input voltage... - Page 11 [ Blank Page ] http://www.national.com...
- Page 12 National Semiconductor Corporation National Semiconductor Europe National Semiconductor National Semiconductor Americas...